Vehicle attendant&#39;s chair

ABSTRACT

A CHAIR OR SEAT IS SPRING-SUPPORTED ON A CYLINDRICAL SUPPORT MOUNTED ON THE END OF A HORIZONTAL BEAM, THE OTHER END OF THE BEAM BEING FIXED TO A ROTATABLE SLEEVE CARRIED BY A VERTICAL   SUPPORT FIXED TO A BASE AND WITH RELEASABLE MEANS FOR LOCKING THE SLEEVE IN SELECTED STORED AND OPERATING POSITIONS.

1 1 Jan. 2, 1973 United States Patent 1191 Barecki et al.

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ho ma E w AR L s C m m m m m E m VI A mm m October 16,1970 FOREIGNPATENTS OR APPLICATIONS Appl. N0.: 81,316 i [22] Filed:

3/1892 Germany................

61,632 ...248/407 227,908 6/1963 Austria...........................248/402 U.S. Cl................ Primary ExaminerFI-anciS K Z l [51] Int. Cl. Att0rney Dawson, Tilton, Fallon & Lungmus Achair or seat isspnng-supported on a cylmdrlcal support mounted on theend of a horizontal beam, the

T C A R T S B A 72 5m 2 other end of the beam being fixed to a rotatablesleeve carried by a vertical support fixed to a base and with 5/1927Turner.......................

releasa ble means f6; locking the sleeve in selected stored andoperating positions.

.248/418 X 7/1927 Stubblebine....................248/418 7/1936 Stoll......248/408 X 5/1941 Muma ........................297/349 X 5 Ciaims,16 Drawing Figures PKTENTEDJM 2 I915 3.708.203

' 8HEE-T10F4' v I INVENTORS Chester J. Barecki Walter E. N'ordmurkahwmcylltanp, ialvv 5 2 ATTORNEYS PATENTEDm- 2197s v 3.708.203

I suzeraum {NVENfORS Chester J. Boreckl Walter E. Nordmark BY@awv/m,JdZ&m9,

i W ATTORNEYS SHEET 4 OF 4 INVENTORS Chester J. Barecki Walter E.Nordmork BY @awuom 7%;

and?

5 ATTORNEYS VEHICLE ATTENDANTS CHAIR BACKGROUND AND SUMMARY seat supporton which the seat is guided and spring- 'Imounted.v In such a structure,releasable means are provided for lockingthe sleeve in selectedpositions of rotation, as, for example, in a storage position and inoperating positions, and in the structure a limit member is provided forlimiting upward movement of the spring-mounted seat.

DRAWINGS In the accompanying drawings, FIG. 1 is a front perspectiveview of the chair unit in the operating position: FI 2.?! arp spsst venew! thss m FIG. 3, a three-quarterfront view of the chair unit in theoperating position;- FIG. 4', a view similar to FIG. 3 showing the chairunit in a stored position; FIG. 5, a view of the left side of the chairunit with the seat in the lowest position; FIG. 6, a view similar toFIG. 5 showing the chair seat in the highest position; FIG. 7, afragmentary rear view of the seat support and the seat frame, showingthe functioning of the seat height adjustment mechanism; FIG. 8, a viewof the right side of the chair unit showing the chair seat in the mostrearward position; FIG. 9, a view similar to FIG. 8 showing the chair inthe most forward position; FIG. 10, a front perspective view of thechair frame, withthe seat cushion removed and showing the fore and aftadjustment mechanism; FIG. 11, an enlarged broken sectional view of thecolumn-seat support with the seat in the lowest position and showing theretainer member or bolt; FIG. 12, a view similar to FIG. 11 but showingthe seat in the middle height adjustment; FIG. 13, a view similar toFIG. 12 but showing the seat in the highest position and restrained fromupward movement; FIG. 14, a

top plan view of the chair unit in the stored position,

with the seat in the most forward'position; FIG. 15, a similar top viewof the chair unit in the operating position, showing the seat in the;most rearward posi- DETAILED DESCRIPTION In general, we have provided avehicle attendants chair comprising a base which may be fixed to thefloor of a vehicle and carrying a vertical support or pedestal on whichis mounted a sleeve for rotation on the vertical support. The sleeve isprovided with a between the seat and the seat support. Releasable meansare provided for locking the rotatable sleeve in a stored position or ina selected operating position or positions. When the locking means arein intermediate positions, the entire sleeve canbe lifted from thepedestal or vertical support. Further, means are provided for releasablylocking the seat in both horizontal and vertical positions.

chair unit 20 is comprised of a swiveling seat unit 21 on an essentiallyZ-shaped pedestal 22, with an offset column 23 supported by a horizontalbeam 24 attached to a floor base plate 25. i

As shown in FIG..16, the pedestal 22 consists of an inner column 26enclosed by a cylinder 27 closed at the top 28.The cylinder 27 rotatesor swivels on the inner column 26. l

The locking mechanism 29, as seen in FIGS. 14 and lS, consists of a knob30 on a plunger 31, held in place by a spring 32 inside of a supportinghousing 33 and nestles into a recess'34 in the .column 26 for locking itin the stored position, or recess 35 for locking it in the'operatingposition. When the locking 'mechanis m"2 isdisengaged and isswunganywhere between the recesses 34 and 35, the chair unit 20 may beraised off the inner column 26 and removed" from the vehicle. Y

A supporting ring 36 is welded to the plate 25 as well as theinnercolumn 26v to form a strong union of the two. It also acts as a spacerwith a carpeted floor so that the carpeting does not have to belaidunder the lower end of the cylinder in orderto fit snugly against thecolumn 26, which'would provide a possibility of the carpeting shreddingand wadding up under the cylinder, or even between the cylinder andthecolumn, causing a binding action. 1 The seat unit 21 consists of atubular steel frame 37 supporting a back cushion 38 and a seat cushion39.

As shown in FIGS. 10, 14 or 15, the tubular steel seat frame consists ofa U-shaped steel tube 40 with a rear stretcher tube 41 and a set ofparallel tubes 42' and 43 on which the chair slides to obtain a fore andaft adjustment. I I

The tubular frame is supported by a top plate 44 and is attached to itwith four clamps 45 to 48 by screws, lock washers, and nuts 49. u

The fore and aft adjustment mechanism50 consists of a knob 51, plunger52, spring 53, supporting housing 54 attached to the underside of theU-tube 40, and an adjustment bracket 55. The plunger 52 engages with theadjustment bracket 55 by slipping I position,FlG'. 13. I

the flanged bearing 58 by a set screw 62 as well as an outer'cylinder 63attached to thebeam 24. An assist spring 64 fits inside the cylinders,pushing against the bottom plate 65-and the swivel collar 59, to aid inraising the seat from the low position in F I6. 11 to thehigh positionin FIG. 13. Inside the assist spring 64, there is an inner tube 66,closed at the upper end 67, to act as a stop, with the long bolt 68, toprevent the seat from accidentally being pulled off the offset columnwhen raising the seat to the high As shown in FIGS. 5, 6 and 7, theheight adjustment mechanism 69 consists of a knob 69a at the end of theoperating rod 70 which itself is attached to the inner or guide cylinder61'by a bracket 72, then is bent downward so that the up stop 700 at itslower end will engage with one of the several notches of the rack 73,attached to the outer cylinder or seat support 63. The up stop 70a isheld in one of-the notches of the rack 73 by a spring 71 inside of thebracket 72 until the operating rod 70 is pulled up, forcing the up stop700 out of the notch so that the seat may be raised or lowered. l

While in the foregoing specification we have shown the structure inconsiderable detail for'the purpose of illustrating an embodiment oftheinvention,-it will be understood that such details maybe varied widelyby those skilled in the art without departing from the spirit ofour-invention.

We claim:

x'refiiemtta'iaaarrattan' coniprisingi abasei aflvertical support columnmounted to said base; a sleeve telescopically, and rotatably carried bysaid support; a laterallyrextending beam carried by said sleeve?a'nofiset tubular column supported by said beam and including verticallyspaced notches; seat column and spaced inwardly thereof to define anannular spaceto receive said intermediate cylinder when said seat islowered; campi' sian" sfifiiig 'means engaging said'means rotatablymounting said post to urge said intermediate cylinder and .said seatmeans upwardly; a rod connected to said post and received within saidinner tube and including means. preventing complete retraction therefromfor limiting the upper extension of said seat; and an operating armmounted to said intermediate cylinder abbve said offset cylinderincluding astop'engageable with a selected one of said notches andselectively movable-to a disengaged position permitting adjustment ofthe elevation of said seat means. 1

2. The structure of claim 1 wherein said seat means includes ahorizontalplate mounted to the top of said post; a tubular seat framesupported bysaid top plate and including first and second tubularmembers extending fore-to-aft of said seatyclamp means securing saidtubular frame members to said top plate while permitting longitudinalsliding motion thereof along said top plate; an apertured adjustmentbracket mounted to said top plate beneath said frame: a spring- 3 biasedplunger mounted beneath said seat framejand a baseplate: a verticalcolumn attached to said base plate and including at least first andsecond recesses formed in the side thereof; and wherein said systemfurther comprises locking mechanism rotatably and slidably mounted tosaid sleeve and including a retractable plunger biased againstsaid-column and adapted to enter one of said recesses when alignedtherewith; a beam-extending laterally of said sleeve; tioned either inan operating position or a stored position, and said sleeve may beremoved from said column in any intermediate position. I

4.'The structure of claim 'l further comprising an annular supportingring secured to said base column and to said base and serving as'aspacer with a carpeted floor.

5. A vehicle attendants chair base plate; an upright column mountedto-said-base plate and extending above the same, said column definingfirst and second recesses spaced at different angular locationsthereabout; a sleeve rotatably mountedto said column; .locking mechanismrotatably 1 therewith; a beam extend ng laterally of said'sleeve;

plunger and turning said sleeve until said plunger.

aligns with one of said recesses and said seat and beam may be removedcompletely from said floor column by retraction of said plunger fromeither of said recesses; said seat including a downwardly-extending postslidably received within said guide-cylinder; a

top platemounted to the top of said post; a tubularseat frame carried bysaid top plate for-forward and aft'sliding motion; an adjustment meansincluding a bracket attached to the underside of said side plate andincluding a plurality of laterally-spacedapertures; and a retractableplunger carried by'said seat frame for locking said frame relative tosaid top plate when said plunger is received in one of said apertures ofsaid adjustment bracket while permitting fore and aft adjustment of saidseat frame relativeto said top plate when said plunger is retracted fromsaid apertures of said adjustment bracket.

comprising a floor

